Soret and Dufour Numbers Effect on Heat and Mass Transfer in Stagnation Point Flow Towards a Stretching Surface in the Presence of Buoyancy Force and Variable Thermal Conductivity

Abstract

Abstract A numerical study of heat and mass transfer in two-dimensional stagnation-point flow of an incompressible viscous fluid over a stretching vertical sheet in the present of thermal-diffusion (Soret) and diffusion-thermo (Dufour) numbers is investigated. The analysis accounts for both assisting and opposing flows and temperature dependent thermal conductivity. The set of governing equations and the boundary condition are reduced to ordinary differential equations with appropriate boundary conditions. Furthermore, the similarity equations are solve